Method of producing barium chloride



To (ZZZ 11) 7mm it may 0071mm:

-Be it known that L JAMES H. iiieol /Liiiom, e'citizen of the UnitedSio'tes; residing fiultviiie, in ihe county of Smyth and mm 5 ofVirginia, have invented certain new and useful Improvements iiiMethodsioi Producing Barium Chloride, of which. the folio/-- ing' is efull, dear, and. Mic/s; (iesoiiption.

My iuveniioii reietes ie the success-511i utiiimtion of omdeberium.oomeiniug rials heretofore considered me of iieiie or no value in theproduct-ion of more valuable barium compounds. Y

One natural e'oiiece of bei-"ium. be'i'ybee or bai'ite, composedeiiiei'iyoi I n W .ium Pu phete, which been uit-iiizezi. in variousother methods for the pioiiuoeioii barium oompounds, by fifSooeiciii ugburyees with coal dust in :1 suitable mace and then lixiviating theblack iii. formed *eo ob tuin a solution of 'oeriiufo suipi id, whichisoonverted into (fisher wmpoumie by euiizebie reactions. The bio-e1which has been iixiviated until 2U. OfiilQWV-il ooiuoie oerium, toifivit: barium suipiiid', been 37%- nioved, still OXCiiEfiriZiiYcontains about 16 to 20 of barium baeeci upon the eriginei Weight, whichhas heretofore been discarded on aooouna; of iaoir oi ecoiioi'niemethods itsextraoizion. The barium contained in this exhausted black ashep :eers fio be mfiviiliy barium oa 'iionzit e, although ihiuay eon eiu.some poiyeuiphido and my be advantageousiy utilized as ishe ba-riumsource in the practice of my invention.

Another noi'ur'ai eoui'oeof ouude barium is the mineral wiiiieiiie,Wi'iieii is composed chiefly of barium oe-i'bone iiie'iiy miiiem-isources "1 barium ore. 2. m xture of boi iuiii cer'oonote uiiii beriui'neuiphute, which could not heiebofoife be economically treated aseithef'witlieriie or berytee, out wi h amenable to suceeeeifui ireoiiieub in anee Wifih my iu ve Q In ecooicieiiee with my invention thebarium sulphate content mu be utiiized either before or after thebeiiui'n oei-bonuize oon bent is uliiizei The gei'iieuier source ofmaize ,"ziel to be used is firs :53 finely divided. as for examplebygiiuding and. then igestedi with I an ammonium chloride solution toproduce barium ehioi'ieie Whioii has a, ready market. Since pure bariumsulphate on reduction yielcis a black ash containing; some barium 55carbonate, 1?, .ie orefefable, in order $0 exforemixeei with do 2 ucommune the equation (l) with e veouum connection and aspii Meet allfishe barium cerooneie in one tion, to pass: all mineiei souroes ofbarium whioh inay eontai'n bawium soipimiieii any considembie muouuefires through oh-e aim ash reduction pi'ooeee.

eoieiiieii which 4 eo iverie the bu l-"1 1m snip content Iilifl soiubiebarium e'uipiiiii time is noveei by leaching oi". iiziivieting, a-iici.um e see-fling material in the production of various merkembie beiimn(oziipoimds. The residue oiexhausted bieokesii is well ground orotherwise reduced to a finely; divided. sou dihion and then. heatedwiiii e solution. of ammonium ohioride to iiigest the some the 3 3reversible action reeuiizing [being eoroveuienfly iiiusirefeed by thefollowing equation: (1) 139E 3 +2iIH Gi+ continuous heefiBeCQ (H H 1) lI." H the ieibtei be oonsidereo. us represeutiiig in iy also be represented. es fohows:

(2) SolubleBWUQQNH1 4 r my FaBeCL- (NEQ QG solution with air, butfihe'simpieet way is to conbiimousiy boil the solution with or with outthe uepiira'tiouof air through it The aspiration. with air is noteoeeuiiei' if the 'iution eeiuziiiy boils uiei -ough 'e of 1% both mayhasten the .proeeee. Che ammonium carbonate can be U}. removed andutilize& in vmfii us we yei 1.1, the barium carbonate 'e uotfituodivided, it; will moi: pass into eoiueiou a were tain the value ofthe constant and consequently the reaction. This iscspecially true wherethe source of barium has a rather small percentage of barium cause thebarium carbonate must be rapidly accessible to the ammonium chloride,and the presence of other substances may prevent this it the bariummaterial is not finely divided. lt will be seen from the above that thereaction will be much more rapid at the beginning than at a later stageof the operation, but under ordinary conditions the reaction will be 90%completed ai'ter an interval ol' about three hours. The barium chloridepasses into solution as formed and may be rccorcrcd by filtering,evaporating, and cryslallizing in the usual manner.

It desired the natural mineral mixture of barium carbonate and bariumsulphate may be linely ground and digested with the ammonium chloridesolution in the above manner, which will dissolve out the barium canbonate leaving the barium sulphate unall'ected. lhe residue of bariumsulphate can then be calcined with coal dust and lixiviated to obtainthe soluble barium sulphid as before. My improved method thereforeenables me to utilize barium sources not economically or practicallyheretofore workable.

It will be obvious that various changes in the details of the hereindescribed method may be made without departing from the principle andscope of the invention as expressed in the appended claims.

:arbonate be- I claim:

1. The method of producing barium chloride which comprises reactingu'pon finely ground barium carbonate with a. l1ot solution of ammoniumchloride to form barium chloride. and volatile by-products, and removingthe volatile by-products substantially as rapidly as formed byaspirating the the solution with air.

2. The method of producing barium chloride which comprises reducing theresidue from lixiviated barium black ash to a finely divided conditionand then reacting upon the same with a solution of ammonium chloride toproduce barium chloride and ammonium carbonate.

3. The method of producing barium chloride which comprises reducing theresidue from lixiviated barium black ash to a finely divided conditionand then boiling the same with a solution of ammonium chloride to formbarium chloride and volatile ammonium compounds.

4. The method of producing barium chloride which comprises reducing theresidue from lixiviated barium black ash to a finely divided condition,then reacting upon he same with a solution of ammonium chloride to formbarium chloride and volatile byproducts, and removing the volatileby-produets substantially as rapidly as formed by aspirating thesolution with air.

In witness whereof, I hereunto subscribe my signature.

JAMES H. MAOMAHON.

